Remove unowned Cookie.* histograms.

net/cookies/cookie_monster.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Brought to you by the letter D and the number 2.
 
 #ifndef NET_COOKIES_COOKIE_MONSTER_H_
 #define NET_COOKIES_COOKIE_MONSTER_H_
 
 #include <deque>
@@ skipping 511 matching lines @@
 
   // Invokes deferred calls.
   void InvokeQueue();
 
   // Checks that |cookies_| matches our invariants, and tries to repair any
   // inconsistencies. (In other words, it does not have duplicate cookies).
   void EnsureCookiesMapIsValid();
 
   // Checks for any duplicate cookies for CookieMap key |key| which lie between
   // |begin| and |end|. If any are found, all but the most recent are deleted.
-  // Returns the number of duplicate cookies that were deleted.
-  int TrimDuplicateCookiesForKey(const std::string& key,
-                                 CookieMap::iterator begin,
-                                 CookieMap::iterator end);
+  void TrimDuplicateCookiesForKey(const std::string& key,
+                                  CookieMap::iterator begin,
+                                  CookieMap::iterator end);
 
   void SetDefaultCookieableSchemes();
 
   void FindCookiesForHostAndDomain(const GURL& url,
                                    const CookieOptions& options,
                                    bool update_access_time,
                                    std::vector<CanonicalCookie*>* cookies);
 
   void FindCookiesForKey(const std::string& key,
                          const GURL& url,
@@ skipping 110 matching lines @@
                          CookieList* cookies_to_add,
                          CookieList* cookies_to_delete);
 
   // Run all cookie changed callbacks that are monitoring |cookie|.
   // |removed| is true if the cookie was deleted.
   void RunCallbacks(const CanonicalCookie& cookie, bool removed);
 
   // Histogram variables; see CookieMonster::InitializeHistograms() in
   // cookie_monster.cc for details.
   base::HistogramBase* histogram_expiration_duration_minutes_;
-  base::HistogramBase* histogram_between_access_interval_minutes_;
   base::HistogramBase* histogram_evicted_last_access_minutes_;
   base::HistogramBase* histogram_count_;
-  base::HistogramBase* histogram_domain_count_;
-  base::HistogramBase* histogram_etldp1_count_;
-  base::HistogramBase* histogram_domain_per_etldp1_count_;
-  base::HistogramBase* histogram_number_duplicate_db_cookies_;
   base::HistogramBase* histogram_cookie_deletion_cause_;
   base::HistogramBase* histogram_cookie_type_;
-  base::HistogramBase* histogram_time_mac_;
   base::HistogramBase* histogram_time_blocked_on_load_;
 
   CookieMap cookies_;
 
   // Indicates whether the cookie store has been initialized.
   bool initialized_;
 
   // Indicates whether the cookie store has started fetching all cookies.
   bool started_fetching_all_cookies_;
   // Indicates whether the cookie store has finished fetching all cookies.
@@ skipping 141 matching lines @@
   virtual ~PersistentCookieStore() {}
 
  private:
   friend class base::RefCountedThreadSafe<PersistentCookieStore>;
   DISALLOW_COPY_AND_ASSIGN(PersistentCookieStore);
 };
 
 }  // namespace net
 
 #endif  // NET_COOKIES_COOKIE_MONSTER_H_